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Vlad1618 [11]
2 years ago
8

A metal block has a mass of 5 grams and a volume of 1 cm3. What is the density of a piece of the same identical metal but with a

different shape and different volume
Physics
1 answer:
Fynjy0 [20]2 years ago
6 0

Answer:

ρ = Mass / Volume     definition of density

ρ  = 5 g / 1cm^3 = 5 g / cm^3

Since the other object is made of the same metal its density is the same:

ρ = 5 g/cm^3

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Which of the following correctly describes the importance of demonstrations to scientific investigation?
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Answer:

A- A demonstration shows how something works, often including models

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A 0.950 kg block is attached to a spring with spring constant 16.0 N/m . While the block is sitting at rest, a student hits it w
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Answer:

Explanation:

Given that,

Mass attached m = 0.95kg

Spring constant k = 16N/m

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Using conservation of energy

∆K.E + ∆P.E = 0

K.E(final) — K.E(initial) + P.E(final) — P.E(initial) = 0

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Also, at the end, at maximum displacement, the speed is zero, therefore, K.E(final) = 0

So, the equation becomes

— K.E(initial) + P.E(final) = 0

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½mv² = ½kA²

mv² = kA²

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v² = 0.0635

v = √0.0635

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v = 25.2 cm/s

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